Thank you for posting your query.
I have noted your symptoms and would like to reassure you that there is no need to worry. This is because normal MRI brain rules out all serious brain diseases.
Your symptoms of diarrhea could be related to a minor gut infection. If the symptoms persist, you can take a course of antibiotics such as norfloxacin
For relief of migraine headaches, you can take rizatriptan
I hope it helps.
Dr Sudhir Kumar MD DM (Neurology)
Senior Consultant Neurologist